Product Information
Technical Specifications for Rectangular Hollow Sections
| Size a x b (mm) |
Wall Thickness t (mm) |
Weight kg/mtr |
Sectional Area cm2 |
Moment of inertia 1xx cm4 |
Moment of inertia 1yy cm4 |
Radius of Gyration 1xx cm |
Radius of Gyration 1yy cm |
Modulus of section Zxx cm3 |
Modulus of section Zyy cm3 |
| 30 x 20 |
1 |
0.75 |
0.96 |
0.6 |
1.21 |
0.82 |
1.12 |
1.41 |
1.08 |
| 30 x 20 |
1.2 |
0.9 |
1.14 |
0.73 |
1.42 |
0.8 |
1.11 |
1.66 |
1.27 |
| 30 x 20 |
1.5 |
1.1 |
1.4 |
0.89 |
1.71 |
0.79 |
1.1 |
2.03 |
1.54 |
| 30 x 20 |
2 |
1.43 |
1.82 |
1.11 |
2.16 |
0.78 |
1.08 |
2.59 |
1.94 |
| 30 x 20 |
2.5 |
1.74 |
2.22 |
1.3 |
2.55 |
0.75 |
1.06 |
4.25 |
2.18 |
| 30 x 20 |
3 |
2.04 |
2.6 |
1.45 |
2.89 |
0.74 |
1.05 |
3.56 |
2.61 |
| 30 x 20 |
1.2 |
1.23 |
1.5 |
3.32 |
1.59 |
1.49 |
1.03 |
1.66 |
1.27 |
| 30 x 20 |
1.5 |
1.54 |
1.86 |
4.04 |
1.93 |
1.47 |
1.01 |
2.02 |
1.54 |
| 40 x 25 |
2 |
1.88 |
2.44 |
5.17 |
2.43 |
1.45 |
0.99 |
2.59 |
1.94 |
DIMENSIONAL TOLERANCES
| Outside Diameter |
Round Hollow Section |
Rectangular Hollow Section |
| Outside Diameter |
As Per Table |
1.5 mm or 1.5% |
| Wall thickness |
Light -8 |
|
| Weight |
Medium & heavy 10%
Single + 10-8%
LOTS>150M + 4%
|
6% |
| Straightness |
Deviation,2% of total length |
|
| Length |
Mill Lengths (m) + 50 mm-0 mm
Exact Lengths + 6 mm-0 m
|
|
Squareness of sides
radii of corner
Angular twist
|
|
90 + 1
<3times wall thickness
2mm + mm per mtr. Max
|